Understanding GPU clock rates

Posted by trizicus on Super User See other posts from Super User or by trizicus
Published on 2011-01-11T01:25:20Z Indexed on 2011/01/11 1:56 UTC
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gpu

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overclocking

I know how to overclock my CPU (mess with multiplier, and bus speed)... However, I've noticed that it seems a bit more complicated with GPU's.

How and where do I start? I've noticed that I can adjust the GPU clock speed in my BIOS.

Card I'm overclocking: http://www.nvidia.com/object/product_geforce_gt_240_us.html

I found that memory bus speed is (Mem Speed * Bus width) / 8. So obviously a good way to overclock the memory bandwidth is to adjust the memory speed.

Now, GPU speed is 550 Mhz. How do I find its speed as well? Do I multiply it by the bus width (128)?

What is ideal GPU speed relative to memory bandwidth?

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